Realization of Uniform Wear of Electrode in Micro EDM
Skin effect at high frequency caused by discharge which makes the current density increases powerfully towards the periphery in the electrode and electric field distortion by the electrode shape are the main sources of non-uniform wear, changes of resistance of electrode because of skin effect has an effect on control system and power supply of micro EDM. Functionally gradient material electrode through composite electroplating technique was proposed. Giant magnetoresistance effect in the functionally gradient material weakened greatly skin effect and decreases the shape changes; sufficient dimensional accuracy of workpieces has been improved significantly.
Micro EDM Uniform wear Functionally gradient material Skin effect
Y.G. Wang M. H. Wu F. L. Zhao Y. Liu
School of Mechanical Engineering, Dalian University, Dalian, 116622, China Key Lab. For Precision & Non-traditional Machining Technology of Ministry of Education, Dalian Unive
国际会议
The 16th International Symposium on Electromachining(第16届国际电加工会议)
上海
英文
637-640
2010-04-19（万方平台首次上网日期，不代表论文的发表时间）